package com.hong.springcloud.controller;

import com.hong.springcloud.entity.Product;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.Map;

/**
 * Created by John on 2018/11/25.
 */
@RestController
public class ProductConsumerController {

    /**
     * 没有使用服务注册中心前
     */
   // private static final String REST_URL_PREFIX = "http://localhost:8001";

    /**
     * 使用服务注册中心后
     */
    private static final String REST_URL_PREFIX = "http://MICROSERVICE-PRODUCT";

    /**
     * 使用restTemplate访问restful接口非常的简单粗暴无脑。 (url, requestMap,
     * ResponseBean.class)这三个参数分别代表 REST请求地址、请求参数、HTTP响应转换被转换成的对象类型。
     */
    @Autowired
    private RestTemplate restTemplate;

    @RequestMapping(value = "/consumer/product/add")
    public Integer add(Product product)
    {
        return restTemplate.postForObject(REST_URL_PREFIX + "/product/add", product, Integer.class);
    }

    @RequestMapping(value = "/consumer/product/get/{id}")
    public Product get(@PathVariable("id") Long id)
    {
        return restTemplate.getForObject(REST_URL_PREFIX + "/product/get/" + id, Product.class);
    }

    @SuppressWarnings("unchecked")
    @RequestMapping(value = "/consumer/product/list")
    public Map<String,Object> list()
    {
        return restTemplate.getForObject(REST_URL_PREFIX + "/product/list", Map.class);
    }

    // 测试@EnableDiscoveryClient,消费端可以调用服务发现
    @RequestMapping(value = "/consumer/product/discovery")
    public Object discovery()
    {
        return restTemplate.getForObject(REST_URL_PREFIX + "/product/discovery", Object.class);
    }
}
